Aerator for a composting bin



FIG. 1 is a perspective view of an aerator for a composting binaccording to a preferred embodiment of the present invention;

FIG. 2 is a bottom view of thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a top view thereof.

The ornamental design for an aerator for a composting bin, as shown anddescribed.